Department of Stem Cells and Developmental Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, P.O. Box 19395-4644, Tehran, Iran.
In Vitro Cell Dev Biol Anim. 2010 Apr;46(3-4):395-402. doi: 10.1007/s11626-010-9293-3. Epub 2010 Feb 23.
In this study, we focused on the derivation of human embryonic stem cell (hESC) from preimplantation genetic screening (PGS)-analyzed and preimplantation genetic diagnosis (PGD)-analyzed embryos. Out of 62 fresh PGD/PGS-analyzed embryos, 22 embryos reached the blastocyst stage. From 12 outgrowth blastocysts, we derived four hESC lines onto a feeder layer. Surprisingly, karyotype analysis showed that hESC lines derived from aneuploid embryos had diploid female karyotype. One hESC line was found to carry a balanced Robertsonian translocation. All the cell lines showed hESC markers and had the pluripotent ability to differentiate into derivatives of the three embryonic germ layers. The established lines had clonal propagation with 22-31% efficiency in the presence of ROCK inhibitor. These results further indicate that hESC lines can be derived from PGD/PGS-analyzed embryos that are destined to be discarded and can serve as an alternative source for normal euploid lines.
在这项研究中,我们专注于从植入前遗传学筛查(PGS)分析和植入前遗传学诊断(PGD)分析的胚胎中提取人类胚胎干细胞(hESC)。在 62 个新鲜的 PGD/PGS 分析胚胎中,有 22 个胚胎达到囊胚阶段。从 12 个外胚层囊胚中,我们在饲养层上衍生出了 4 株 hESC 系。令人惊讶的是,核型分析显示,源自非整倍体胚胎的 hESC 系具有二倍体女性核型。一个 hESC 系被发现携带罗伯逊易位平衡。所有的细胞系均显示出 hESC 标志物,并具有多能性,能够分化为三个胚胎生殖层的衍生物。在 ROCK 抑制剂存在的情况下,建立的细胞系具有 22-31%的克隆繁殖效率。这些结果进一步表明,可以从注定要丢弃的 PGD/PGS 分析胚胎中提取 hESC 系,并且可以作为正常整倍体系的替代来源。